Improvement in nut-locks



,s. n. ENocHs.

NUT-LUCK.

Patented Dec. 26, 1876.

jnvenmz m M UNITED STATES PATENT QEEroE,

SAMUEL D. ENOOHS, OF YATES CITY, ILLINOIS.

IMPROVEMENT IN NUT-LOCKS.

Speciiicationforming part of Letters Patent No. 185,633, dated December26, 1876; application lled May 24, 1876.

To all whom 'it may concern:

Be it known that I, SAMUEL D. ENocHs, of Yates City, in the county ofKnox and State of Illinois, have invented certain new and usefulImprovements in Nut-Locks and I do hereby declare that the following isa full, clear, and exact description thereof, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters ofreference marked thereon, which form a part ot' this specification.

The nature of my invention relates to improvements in nut-locks, ormeans forfastening bolt-nutsin place to prevent their becoming loose bythe jarring or tremulous motion of machinery, by the shocks ot' passingtrains, and from other similar causes; and the invention consists,primarily, in the use of a wedge-shaped key, passed transversely in asuitable keyway, and through a splitbolt, for the purpose of spreadingthe bolt, and thus securing the nut; secondarily, and for the purpose ofmore thoroughly securing the key in place, it consists in notching theedges of the spreading-key, so that the sides of the bolt at the narrowside of the split therein will engage in said notches, all ashereinafter fully described.

In the accompanying drawings, Figure lis a side elevation of a bolt andnut, the nut locked by my invention. Fig. 2 is a top view of Fig. 1.Fig. 3 is an end view, and Fig. 4 is a transverse sectional view on theline a: x in Fig. 2.

Referring to the parts by letters, A represents a screw-bolt of ordinaryconstruction, with a split or longitudinal opening, a, in its threadedend, and a key seat or way, c, formed transversely through it by cuttinga groove in each side of the split a. B is a nut threaded and screwedonto the bolt A. O is a wedgeshaped key, as shown at Fig. 3, withnotches c on its sides. The key-seat c is made in the bolt outside ofthe position to be occupied by the nut B, so that the spreading-key Cmay be inserted and driven into place to spread the bolt and enlarge itsouter end, as Well as bind it within the nut, and prevent its beingshaken loose. Ordinarily, the key O being inserted from above, will needno security to prevent its shaking loose; but in situations where itmight be necessary to insert it from below, or where greater securitywas needed, the notches e will be engaged with the narrow side of thesplit a, as shown at Fig. 4, and prevent its withdrawal.

When necessary to remove the notched key O, it may be done by insertingsomething in the split a to separate the parts, or the shoulders on thenotches e may be slightly rounded, so that it may be driven back.

What I claim as new, and desire to secure by Letters Patent, is

1. A nut-lock consisting of the split screwbolt A, having the key-seat oformed in and along the faces of the walls of the cleft, and thewedge-shaped key O, operating in combination, substantially as setforth.

2. The Wedge shaped key O, having notches e, arranged to operate incombination with the bolt A and nut B, the bolt A having a split, a, andkey-seat c, substantially as and for the purpose specified.

ln testimony that l claim the foregoing as my own l affix my signaturein presence of two witnesses.

SAMUEL D. ENOOHS.

Witnesses CHARLES BARKER, THOMAS MGKEE.

